一、标准体系概述为加快天然气贸易计量与国际接轨,提高计量准确度,维护供需双方经济利益,我国结合国情,并参考相应国际标准和国外先进标准,转化、制定了一系列的天然气计量标准。在这一系列标准中,基础标准是GB/T18603-2001《天然气计量系统技术要求》。它是一个系统标准,覆盖了天然气计量系统的设计、建设、投产运行、验收、维护、校准及检定等 I. Overview of Standard System In order to speed up the measurement of international trade of natural gas with international standards, improve the accuracy of measurement and safeguard the economic interests of both supply and demand parties, China has transformed and formulated a series of natural gas measurement standards in light of the national conditions, reference to corresponding international standards and advanced foreign standards. In this series of standards, the basic standard is GB / T18603-2001 “natural gas metering system technical requirements.” It is a system standard covering the design, construction, commissioning, maintenance, calibration and verification of natural gas metering systems